<head>
  <meta charset="utf-8">
  <meta http-equiv="X-UA-Compatible" content="IE=edge">
  <meta name="viewport" content="width=device-width, initial-scale=1">
  {%- seo -%}
  <link rel="stylesheet" href="{{ "/assets/main.css" | relative_url }}">
  {%- feed_meta -%}
  {%- if jekyll.environment == 'production' and site.google_analytics -%}
    {%- include google-analytics.html -%}
  {%- endif -%}

  <link rel="shortcut icon" type="image/x-icon" href="/get-started-ros2/favicon.ico">
  <link rel="apple-touch-icon" href="/get-started-ros2/img/apple-touch-icon.png">
  <meta name="twitter:creator" content="@{{ site.twitter_username }}">
  {% if page.image %}
  <meta name="twitter:card" content="summary_large_image">
  <meta name="og:image" content="{{ site.url }}{{ page.image }}">
  {% else %}
  <meta name="twitter:card" content="summary">
  <meta name="og:image" content="{{ site.url }}{{ site.title_image }}">
  {% endif %}
</head>
